Electrical Impedance Tomography (EIT) is a relatively new medical imaging method, which has the potential to provide novel images of brain function. It is fast, portable, safe and inexpensive, but currently has a relatively poor spatial resolution.

Electrical Impedance Tomography (EIT) is a non-invasive bedside imaging technique that provides real-time lung ventilation information on critically ill patients. EIT can potentially become a valuable tool for optimising mechanical ventilation, especially in patients with acute respiratory distress syndrome (ARDS).

Electrical impedance tomography (EIT) is a noninvasive, radiation-free, bedside monitoring tool that allows real-time imaging of ventilation. It provides a continuous view of the regional pulmonary volume dynamics by using analyses of thoracic impedance derived from 16 or 32 skin electrodes placed around the chest.

There are three types of electrical impedance tomography; conventional EIT, dual frequency and multi-frequency EIT. The conventional EIT uses a single frequency, most often 50 kHz. Images are constructed from two measurements at two different times to observe the change in conductivity.